/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.alibaba.alink.operator.common.io.serde;

import org.apache.flink.api.common.serialization.SerializationSchema;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.types.Row;

import com.alibaba.alink.operator.common.io.csv.CsvFormatter;

import java.nio.charset.StandardCharsets;

public class RowToCsvSerialization implements SerializationSchema <Row> {
	private static final long serialVersionUID = 9151287912131065711L;
	private String fieldDelim;
	private TypeInformation <?>[] typeInfos;
	private CsvFormatter formatter;

	public RowToCsvSerialization(TypeInformation <?>[] typeInfos, String fieldDelim) {
		this.fieldDelim = fieldDelim;
		this.typeInfos = typeInfos;
	}

	@Override
	public byte[] serialize(Row element) {
		if (this.formatter == null) {
			this.formatter = new CsvFormatter(typeInfos, fieldDelim, '\"');
		}
		return this.formatter.format(element).getBytes(StandardCharsets.UTF_8);
	}
}
